There's already a project to serve the use case you're describing (school in a disconnected village): Internet in a Box https://internet-in-a-box.org/ https://

There's already a project to serve the use case you're describing (school in a disconnected village): Internet in a Box https://internet-in-a-box.org/ https://internet-in-a-box.org/ They provide offline access to Wikipedia, OpenStreetMap, Project Gutenberg, and many other resources.